Dell EMC PowerEdge MX7000 Field Service Manual page 16

performing this test. If you do not have your own Wrist Strap tester, check with your regional office to find out if they have
one. To perform the test, plug the bonding wire on the Wrist Strap to the tested while it is strapped to your wrist and press the
button. A green LED lights up if the test is successful; a red LED lights up and an alarm sounds if the test fails.
Figure 12. Wrist Strap tester
Insulator elements
Dell recommends to place ESD sensitive devices, such as plastic heat sink casings, away from internal components that are
insulators and highly charged.
Table 4. Placement of insulator elements
Unacceptable placement Acceptable placement
Consider the working environment
Before deploying the ESD Field Service kit, assess the situation at the customer location. For example, deploying the kit for a
server environment is different than for a desktop or portable environment. Servers are typically installed in a rack within a data
center; desktops or portables are typically placed on office desks or cubicles.
Look for a large open flat work area that is free of clutter and large enough to deploy the ESD kit with more space to
accommodate the type of system that is being repaired. The workspace should also be free of insulators that can cause an ESD
event. On the work area, insulators such as Styrofoam and other plastics must be moved at least 12-inches or 30 centimeters
away from sensitive parts before physically handling any hardware components.
ESD packaging
All ESD sensitive devices must be shipped and received in static-safe packaging. Preferably, metal, static-shielded bags. Ensure
that you return the damaged parts in the same ESD bag or packaging in which the new part arrived in. The ESD bag should be
folded over and taped shut, and the foam packing material used in the original box must be used.
16 Field service information